Short Hand for "Thank you". In Mandarin/Japanese 3 is pronounced "san". Putting "san" + "Q" makes it sound like "Thank you"
3Q for all your help
by Walter Ho May 8, 2006
Chinese for "kthxbai". Pronounced "san-cue, ba ba eee," this sounds to native Mandarin speakers like the English phrase "Thank you, Bye bye." (or b'bye, commonly used in China the way English speakers use the Italian word Ciao). Commonly used to end text messages.
美国欠的中国八千万点零万美元。笑出声来。3Q 881
by Tsu Dho Nimh October 16, 2009